SpbCx calls event callback functions that are implemented by the SPB controller driver.
#SPB DRIVER#
The SPB controller driver calls driver support methods that are implemented by SpbCx. The SPB controller driver and SpbCx both run in kernel mode, and communicate with each other through the SpbCx DDI. The following diagram shows the SPB controller driver and SpbCx. The SPB controller driver performs all hardware-specific operations that are required to handle these requests.
#SPB DRIVERS#
These queues contain I/O requests from the drivers that manage the peripheral devices that are connected to the bus. These tasks include managing the I/O request queues for the SPB controller. SpbCx performs processing tasks that are common to SPB controller drivers. SpbCx cooperates with the SBP controller driver to handle I/O requests for peripheral devices that are connected to the SPB. To perform SPB-specific operations, the SPB controller communicates with SpbCx through the SpbCx device driver interface (DDI). This driver communicates with SpbCx to perform operations that are specific to SPB controllers, and communicates directly with KMDF to perform generic driver operations.įor example, an SPB controller driver typically calls the WdfDeviceInitSetPnpPowerEventCallbacks method in KMDF to register to receive power event callbacks, and calls the WdfInterruptCreate method to connect the driver's interrupt service routine (ISR) to the interrupt from the SPB controller. The hardware vendor for the SPB controller device supplies a controller driver to perform all hardware-specific driver operations. SpbCx is a system-supplied extension to the Kernel-Mode Driver Framework (KMDF).
Starting with Windows 8, the SPB framework extension (SpbCx) simplifies the development of controller drivers for simple peripheral buses (SPBs). The hardware vendor for an SPB controller provides an SPB controller driver to manage the hardware functions in the controller.
An SPB controller is a device that controls a simple peripheral bus (SPB) and that transfers data to and from the peripheral devices that are connected to the SPB.
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